Patents by Inventor Alten F. Grandt, Jr.

Alten F. Grandt, Jr. has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Assessment of flaw growth potential in structural components
    Patent number: 4107980
    Abstract: A method for predicting damage accumulation in a structural component in which a gage in the form of a metal strip having a flaw therein of predetermined length is attached to the component having a flaw therein of a length assumed to be greater than the length of any other flaw therein. Damage accumulation in the structural component is tracked by following the growth of the flaw in the gage and determining from that growth the growth in the flaw in the component. Thus, in accordance with this method, flaw growth in a gage is related to flaw growth in a structural component rather than to time so that damage actually accumulated in the component can be predicted regardless of the time factor.
    Type: Grant
    Filed: June 7, 1977
    Date of Patent: August 22, 1978
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Robert L. Crane, Alten F. Grandt, Jr., Joseph P. Gallagher